Hi there, I think that the skylight would definitely be the way to go, if your budget runs to it. It will really lift the whole stairwell and make it much lighter and brighter. Full height frosted doors may be OK on the laundry, but I wouldn't recommend it for the bathroom as when lights are on in the room, you may be able to see more than you bargained for, from the corridor. The occupants of the house may feel comfortable with it, but any guests or visitors may not. A frosted panel at the top of the door would be as far as I'd go. Bear in mind too, that glass lets more sound through than timber, and in a situation like yours, I'd recommend a solid core door, for that reason. I hope this helps!

@siriuskey - thanks for the images, can see it definitely works nicely with some of those, esp that first one! unfortunately being an original californian bungalow, the front windows aren't very big so im hesitant to cover them; they are similar in width but not quite as tall as the windows in that middle picture. our bedhead, when i am standing comes up to about chin level (im 165cm) - i don't think the picture i posted does it justice as you can't see the bed legs haha...so i think it would end up looking like the middle picture :( @girlguides - i like your suggestion for shuffling around the ensuite layout - it does make sense to have the door infront of the vanity. we will try to get a bit of extra length on the ensuite (all based on council town planning restrictions due to proximity to our neighbours) and that should allow for the entrance to sit comfortably in the corner of that wall with some nice space around the vanity...will still be tight to fit the bed, side tables and door tho!!! side tables are 65cm each, and bed is approx 190cm... and width of the room is 4m on each side....so will potentially be a skinny 750cm sliding door to the ensuite...which of course is better than a skinny entrance door to the bedroom tho!!

I personally like the idea of the laundry cupboard as long as it's well planned and must include space for dirty clothes, my kids had laundry baskets on wheels in the bedrooms and I would ask them to wheel them to the laundry on wash day. When washed and dry I would fold and return them to the basket for them to collect. I don't iron them as it's a waste of time in my family. One of the best items I have is a pull down ironing board. it can be where ever you have space for everyone to use. Dryers are easily ducted so no problems with condensation, your plumber can do this, F&P have them so can imagine others do as well. Similar to the following idea, the laundry can be installed behind sliding or folding doors to cover any mess that you might have and can include a hanging drying rack above the bench next to the window, this is great for shirts and reduces any wrinkles.

you need to confirm all the dimensions as there's some discrepancies in the sizes shown in your plan but my suggestions include losing the linen cupboard in favour of a bigger bathroom with space for full size bath, shower, vanity and toilet with linen storage in the vanity under the handbasin and toiletries in wide wall cabinets over the sink and toilet...there's a sliding glass door off the kitchen to an enlarged deck and a galley kitchen with old laundry becoming a combination laundry and pantry with wide counter for under bench washer and blind corner pantry and space for the fridge and removing only portion of the wall allows for an opening between kitchen and living with space leftover for stove, counter, drawers and wall cabinets and more counter with double sink, DW and drawers on the other side